<template>
   <div>
       <CityHeader></CityHeader>
       <CitySearch :cities="cities"></CitySearch>
       <CityList :hotCities="hotCities" :cities="cities" :letter="letter"></CityList>
       <CityAlphabet :Alphabet="Alphabet" @change="handleLetterChange"></CityAlphabet>
   </div>
</template>

<script>
    import axios from 'axios'
    import CityHeader from './components/Header'
    import CitySearch from './components/Search'
    import CityList from './components/List'
    import CityAlphabet from './components/Alphabet'
    export default {
        name: "City",
        data(){
            return {
                hotCities:[],
                cities:{},
                Alphabet:[],
                letter:''
            }
        },
        components:{
            CityHeader,
            CitySearch,
            CityList,
            CityAlphabet
        },
        methods:{
            getCityInfo(){
                axios.get('/api/city.json')
                    .then(this.handleGetCityInfoSucc)
            },
            handleGetCityInfoSucc(res){
                res = res.data;
                if (res){
                    const data = res.data;
                    this.hotCities = data.hotCities;
                    this.cities = data.cities;
                    Object.keys(this.cities).forEach((item,index) => {
                        this.Alphabet.push(item);
                    });
                }
                // console.log(this.Alphabet);
            },
            handleLetterChange(letter){
                this.letter = letter;
            }
        },
        mounted(){
            this.getCityInfo()
        }
    }
</script>

<style lang="stylus" scoped>

</style>